Qing Xu, Marcia B. Costa e Silva, J. Danger, F. Mendieta, S. Guilley, P. Bellot, P. Gallion
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Towards Quantum Key Distribution System using Homodyne Detection with Differential Time-Multiplexed Reference
In this work we present the principles and experimental demonstration of a BB84 quantum key distribution (QKD) one way system using fainted pulses and a quadrature phase-shift-keying (QPSK) format including a time- multiplexed unmodulated carrier reference at Alice's end, and a differential homodyne reception at Bob's end. We also describe the secure electronics interface subsystem concept for the interaction with upper layers in an IP application.